File Optimizer is a handy application designed for re-compressing files or various types, so you can transfer or send them by e-mail much easier.Among the supported file formats, you will find AIR, APK, APNG APPX, CBZ, DOCX, GIF, GZ, EPUB, ICO, JAR, JPEG, MNG, MPP, PNG, PPTX, PDF, PUB, SWF, TIF, VSD, XAP, XLSX, and ZIP.